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Summary of Significant Accounting Policies Summary of Significant Accounting Policies 5 (Details)
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12 Months Ended |
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Dec. 31, 2012
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Buildings and improvements | Minimum [Member]
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| Property, Plant and Equipment [Line Items] | |
| Property, Plant and Equipment, Useful Life | 20 years |
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Buildings and improvements | Maximum [Member]
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| Property, Plant and Equipment [Line Items] | |
| Property, Plant and Equipment, Useful Life | 40 years |
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Leasehold improvements | Minimum [Member]
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| Property, Plant and Equipment [Line Items] | |
| Property, Plant and Equipment, Useful Life | 5 years |
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Leasehold improvements | Maximum [Member]
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| Property, Plant and Equipment [Line Items] | |
| Property, Plant and Equipment, Useful Life | 15 years |
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Furniture and equipment | Minimum [Member]
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| Property, Plant and Equipment [Line Items] | |
| Property, Plant and Equipment, Useful Life | 3 years |
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Furniture and equipment | Maximum [Member]
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| Property, Plant and Equipment [Line Items] | |
| Property, Plant and Equipment, Useful Life | 7 years |